Hydrogenated nitrile rubber (HNBR)
A spring, the composition of which depends on the type
Furthermore, natural rubber gaskets are highly durable and long-lasting, making them ideal for applications that require frequent assembly and disassembly. Unlike synthetic rubber gaskets, natural rubber gaskets are less prone to degradation from exposure to heat, ozone, and UV radiation, ensuring a longer service life and reduced maintenance costs.
Shaft surface speed
Make sure that the new gasket is clean, and confirm which way round it fits. The upper side is usually marked 'top', 'haut' or 'oben'.
While Viton offers a superior temperature and chemical range than other materials, it can be more expensive than the others as well. Let’s take a look at an alternative that is easier on the wallet, Polyacrylate.

The spring shown in the figure is known as a garter spring, and it maintains tension on the sealing lip of the seal. Garter springs are closed coil springs used in the form of a ring, the ends of which are connected together as shown in Figure 2.10.